<template>
  <div id="app">
    <div class="container">
      <!-- 顶部框模块 -->
      <div class="form-group">
        <div class="input-group">
          <h4>品牌管理</h4>
        </div>
      </div>
      <!-- 数据表格 -->
      <table class="table table-bordered table-hover mt-2">
        <thead>
          <tr>
            <th>编号</th>
            <th>资产名称</th>
            <th>价格</th>
            <th>创建时间</th>
            <th>操作</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for="val in list" :key="val.id">
            <td>{{val.id}}</td>
            <td>{{val.name}}</td>

            <!-- 如果价格超过100，就有red这个类 -->
            <td :class="{red: val.price > 100}">{{val.price}}</td>
            <td>{{val.time}}</td>
            <td><a href="#" >删除</a></td>
          </tr>
        </tbody>
          <!-- 
        <tfoot >
          <tr>
            <td colspan="5" style="text-align: center">暂无数据</td>
          </tr>
        </tfoot>
            -->
      </table>

      <!-- 添加资产 -->
      <!-- 1.利用v-model 绑定 name 和 price -->
      <form class="form-inline">
        <div class="form-group">
          <div class="input-group">
            <input
              type="text"
              class="form-control"
              placeholder="资产名称"
              v-model="name"
            />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <div class="form-group">
          <div class="input-group">
            <input
              type="text"
              class="form-control"
              placeholder="价格"
              v-model.number="price"
            />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <!-- 阻止表单提交 防止页面刷新 -->
        <button class="btn btn-primary" @click.prevent="addFn">添加资产</button>
      </form>
    </div>
  </div>
</template>

<script>

export default {
  data() {
    return {
      name: "", // 名称
      price: 0, // 价格
      list: [
        { id: 100, name: "外套", price: 199, time: new Date('2010-08-12')},
        { id: 101, name: "裤子", price: 34, time: new Date('2013-09-01') },
        { id: 102, name: "鞋", price: 25.4, time: new Date('2018-11-22') },
        { id: 103, name: "头发", price: 19900, time: new Date('2020-12-12') }
      ],
    };
  },
  methods: {
    addFn () {
      console.log('点击了');
      if (this.name.trim().length === 0 || this.price === 0) {
        alert('你眼睛长哪了,不输入')
        return
      }
      // 把 name和price 插入到数组里
      this.list.push({
        // 取当前数组最后一项的id+1 为新对象的id
        id: this.list[this.list.length -1].id +1,
        name: this.name,
        price: this.price,
        time: new Date()
      })
      // 添加成功想清空input
      this.name = ''
      this.price = 0
    }
  }
};
</script>

<style >
.red{
  color: red;
}
</style>